from rest_framework.views import exception_handler
from django.db import DatabaseError
from rest_framework.response import Response
from rest_framework import status
import logging
logger = logging.getLogger('django')
def custom_exception_handler(exc, context):
    """
     ⾃定义异常处理
     :param exc: 异常类
     :param context: 抛出异常的上下⽂
     :return: Response响应对象
     """
    # 调⽤drf框架原⽣的异常处理⽅法
    response = exception_handler(exc, context)
    if response is None:
        view = context['view']
        if isinstance(exc, DatabaseError):
            # 数据库异常
            logger.error('[%s] %s' % (view, exc))
            response = Response({'message': '服务器内部错误'},status=status.HTTP_507_INSUFFICIENT_STORAGE)
    return response